64 bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group)  in fsnotify_notify_queue_is_empty()  argument
66 	BUG_ON(!mutex_is_locked(&group->notification_mutex));  in fsnotify_notify_queue_is_empty()
67 	return list_empty(&group->notification_list) ? true : false;  in fsnotify_notify_queue_is_empty()
70 void fsnotify_destroy_event(struct fsnotify_group *group,  in fsnotify_destroy_event()  argument
78 	group->ops->free_event(event);  in fsnotify_destroy_event()
87 int fsnotify_add_event(struct fsnotify_group *group,  in fsnotify_add_event()  argument
93 	struct list_head *list = &group->notification_list;  in fsnotify_add_event()
95 	pr_debug("%s: group=%p event=%p\n", __func__, group, event);  in fsnotify_add_event()
97 	mutex_lock(&group->notification_mutex);  in fsnotify_add_event()
99 	if (group->q_len >= group->max_events) {  in fsnotify_add_event()
102 		if (!list_empty(&group->overflow_event->list)) {  in fsnotify_add_event()
103 			mutex_unlock(&group->notification_mutex);  in fsnotify_add_event()
106 		event = group->overflow_event;  in fsnotify_add_event()
113 			mutex_unlock(&group->notification_mutex);  in fsnotify_add_event()
119 	group->q_len++;  in fsnotify_add_event()
121 	mutex_unlock(&group->notification_mutex);  in fsnotify_add_event()
123 	wake_up(&group->notification_waitq);  in fsnotify_add_event()
124 	kill_fasync(&group->fsn_fa, SIGIO, POLL_IN);  in fsnotify_add_event()
132 void fsnotify_remove_event(struct fsnotify_group *group,  in fsnotify_remove_event()  argument
135 	mutex_lock(&group->notification_mutex);  in fsnotify_remove_event()
138 		group->q_len--;  in fsnotify_remove_event()
140 	mutex_unlock(&group->notification_mutex);  in fsnotify_remove_event()
147 struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group)  in fsnotify_remove_first_event()  argument
151 	BUG_ON(!mutex_is_locked(&group->notification_mutex));  in fsnotify_remove_first_event()
153 	pr_debug("%s: group=%p\n", __func__, group);  in fsnotify_remove_first_event()
155 	event = list_first_entry(&group->notification_list,  in fsnotify_remove_first_event()
162 	group->q_len--;  in fsnotify_remove_first_event()
171 struct fsnotify_event *fsnotify_peek_first_event(struct fsnotify_group *group)  in fsnotify_peek_first_event()  argument
173 	BUG_ON(!mutex_is_locked(&group->notification_mutex));  in fsnotify_peek_first_event()
175 	return list_first_entry(&group->notification_list,  in fsnotify_peek_first_event()
183 void fsnotify_flush_notify(struct fsnotify_group *group)  in fsnotify_flush_notify()  argument
187 	mutex_lock(&group->notification_mutex);  in fsnotify_flush_notify()
188 	while (!fsnotify_notify_queue_is_empty(group)) {  in fsnotify_flush_notify()
189 		event = fsnotify_remove_first_event(group);  in fsnotify_flush_notify()
190 		fsnotify_destroy_event(group, event);  in fsnotify_flush_notify()
192 	mutex_unlock(&group->notification_mutex);  in fsnotify_flush_notify()